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you could try and get one of those set up \ tweaking discs
from Avia to help with the convergance settings, color balance etc.
your manual if you still have it should have a list of factory settings, or barring that a google search on the make and model .
also does the problem occur no matter what the source?
your cable \ satellite etc connector might just be bad ie broken sauder point or something.
looks like decent set , Id try and save it most repair places will give a free estimate .
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rub it and see.
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